They already have a replacement that costs money -- they're continuing to sell TiVo Desktop Plus
, now for $15.99. And, they try to imply that the non-Plus version won't work with Windows 8, and Plus will, though AFAICT there's no difference, and neither version has been updated since 2.8.3. (?) It's quite odd...
The email also suggests that they're shutting down the Mac version altogether, but there's no notice attached to that one here
. Then again, it looks like they have the PPC version as the main Mac version, and another entry that says "Now there is a version of TiVo Desktop for the Intel-based Macs running Snow Leopard. Download this version if you have upgraded to the latest version of OS X!". So, they've not exactly kept up to date there.