Just got the new update this morning from the Google Play store. Several new SmartApps and especially one that will allow creating a virtual switch within the app.
From another thread, I also understand the app limits the number of devices that you can join to 200 (I already have 275+). This is with the latest Android app only and there is a workaround:
1.7.56 has the same change log as 1.7.55, so i’d assume its some kind of hotfix for something broken in 1.7.55. Either way, both have the 200 device limit unless you add through the device menu.