I have been asked this question multiple times in the last few weeks so I thought it would be best to lay the question to rest. Many users have been asking if the accessories for the BlackBerry Torch 9800 are compatible with the new BlackBerry Torch 9810. I have tested out multiple accessories on both devices from Case-Mate, OtterBox, and other vendors and so far they have all fit like a charm. RIM confirms that the dimensions of both devices are identical and their accessories like the SyncPod clearly are for both devices.
The easiest way to confirm this and lay the question to rest is to look at RIM’s official ShopBlackBerry store which seems to have simply changed the description of every 9800 accessory to say 9800/9810. Even the battery (F-S1) is the same on both devices. In other words this is more of an upgrade like the 9780 was for the 9700 instead of the incompatible Storm 9500/9530 to the Storm 9520/9550.
Let us know if you run into any accessory or case that does not work between the two devices!