Basically the sensor stays the same but they changed the packaging and the case.

Unfortunately it's sold out again. Shipping to Europe is also quite expensive as the price of the sensor is almost added again with shipping costs and taxes.

It'd be great if they managed to produce a supply large enough to supply EU dealers with it but I suppose the team is too small for that.

I had to deal with this two days ago. Using one of the new remotes, you have to get very close to the lamp and hold down the power and the scene button for ten seconds. My color lamp started flashing cold white and once it was fully reset it glowed in warm white. After that it was ready to pair again. The remote doesn't need to be paired to the lamp.