The first, KB 2987107, is the IE 11 rollup patch for Windows 8/8.1, MS 14-056. technet.microsoft.com/ library/security/ms14-056. I don't see anything that's TP-specific about the patch. The second, KB 3001237, doesn't have the KB article posted as yet, but it's supposed to be a Flash Player security patch for IE 11 on TP. Ho hum.
A new TP patch just hit - KB 3000061 is the Windows 8.1 Kernel driver patch, MS14-058. technet.microsoft.com/ library/security/ms14-058 Considering how much fun we've had with kernel drivers lately, it'd be a good idea to avoid it for as long as you can. (Thank you, TP-forced Automatic Update.)
That could be true, but it's never stated in the Microsoft information database. It's a security patch for Internet Explorer though.
It's kind of interesting that MS would roll a kernel mode driver update out the Auto Update chute at around the same time there's a rumored change in builds. Kernel mode driver updates are fraught with problems, and if a new build is imminent, why put TP folks through the angst? Maybe it's a trial-by-fire sort of update...