I don't think that Basic4PPC will be updated to a new version.
The last Basic4PPC version supported Windows Mobile 6.5.
Then Micosoft changed to Windows Phone 7 with no upward compatibility.
All programs developped for WM don't work anymore on Windows Phone 7.
That's the reason why Erel developped Basic4Android.
Basic4PPC can still be used to develop desktop applications.