It looks like there is no games available for transfer at the moment, is this correct?

... and, is LA games expected to be transferable? I'm looking to get DOTT Remastered, and it's on the Steam summer sale at the moment. Not sure if I'll bother if I won't be able to transfer it to GOG.

Yes. Those that may know are most likely under NDA, thus they cannot say. If you are hoping for a guaranteed transfer, assume it won't be transferable.

I highly doubt GOG or publishers will pre-announce games for GOG Connect to encourage people to buy them on Steam so Valve gets all the money, but then transfer them to GOG for free so that GOG support is paid wages to support them. Wouldn't make a lot of economical sense to do that. :)