Yes. Here are the timelines:

The DMA started applying as of beginning of May 2023. Within two months, companies providing core platform services have to notify the Commission and provide all relevant information. The Commission will then have 45 working days to adopt a decision designating a specific gatekeeper. Designated gatekeepers will have six months after the Commission decision to ensure compliance with the obligations foreseen in the DMA.

So we should start hearing things in about 2-3 months, with compliance in 8-9 months.

Relevant sections:

The ability of end users to acquire content, subscriptions, features or other items outside the core platform services of the gatekeeper should not be undermined or restricted. In particular, a situation should be avoided whereby gatekeepers restrict end users from access to, and use of, such services via a software application running on their core platform service. For example, subscribers to online content purchased outside a software application, software application store or virtual assistant should not be prevented from accessing such online content on a software application on the core platform service of the gatekeeper simply because it was purchased outside such software application, software application store or virtual assistant.

Gatekeepers can hamper the ability of end users to access online content and services, including software applications. Therefore, rules should be established to ensure that the rights of end users to access an open internet are not compromised by the conduct of gatekeepers. Gatekeepers can also technically limit the ability of end users to effectively switch between different undertakings providing internet access service, in particular through their control over hardware or operating systems. This distorts the level playing field for internet access services and ultimately harms end users. It should therefore be ensured that gatekeepers do not unduly restrict end users in choosing the undertaking providing their internet access service.

The lack of interoperability allows gatekeepers that provide number-independent interpersonal communications services to benefit from strong network effects, which contributes to the weakening of contestability. Furthermore, regardless of whether end users ‘multi-home’, gatekeepers often provide number-independent interpersonal communications services as part of their platform ecosystem, and this further exacerbates entry barriers for alternative providers of such services and increases costs for end users to switch. Without prejudice to Directive (EU) 2018/1972 of the European Parliament and of the Council (14) and, in particular, the conditions and procedures laid down in Article 61 thereof, gatekeepers should therefore ensure, free of charge and upon request, interoperability with certain basic functionalities of their number-independent interpersonal communications services that they provide to their own end users, to third-party providers of such services.

Gatekeepers should ensure interoperability for third-party providers of number-independent interpersonal communications services that offer or intend to offer their number-independent interpersonal communications services to end users and business users in the Union. To facilitate the practical implementation of such interoperability, the gatekeeper concerned should be required to publish a reference offer laying down the technical details and general terms and conditions of interoperability with its number-independent interpersonal communications services. It should be possible for the Commission, if applicable, to consult the Body of European Regulators for Electronic Communications, in order to determine whether the technical details and the general terms and conditions published in the reference offer that the gatekeeper intends to implement or has implemented ensures compliance with this obligation.

In all cases, the gatekeeper and the requesting provider should ensure that interoperability does not undermine a high level of security and data protection in line with their obligations laid down in this Regulation and applicable Union law, in particular Regulation (EU) 2016/679 and Directive 2002/58/EC. The obligation related to interoperability should be without prejudice to the information and choices to be made available to end users of the number-independent interpersonal communication services of the gatekeeper and the requesting provider under this Regulation and other Union law, in particular Regulation (EU) 2016/679.

Pretty clear legislation - no lock-in, don't block access to content, you must publish your API for others to use. Very good legislation.