There will be a new SDK for the new devices with the 45,245,245m,945,e530 and e830 as targets. With this many new devices, I'd expect this any time (within days) - they can't release an SDK with the devices before they are announced.
Like which apps? Spotify? I’d guess they have a version of the SDK nobody else does. The store website doesn’t even let you select those devices, and the images for 245 Music, etc. (on the Spotify page) are just generic icons instead of pictures of the devices.
In the past, some apps have been auto-migrated to certain new devices, but I haven’t seen any evidence of that (yet) with the latest devices.
Garmin/Garmin partners I guess, and in 3.0.10, there was "upcoming wearable" which I think is the 245. But I'd skip the "upcoming" ones and just wait for a new SDK.
There's a bit of breathing room, in that I don't think the device is shipping for a bit.
