While we're nearing the end of the Linux 3.12 merge window where major new features and other new developments are committed, the failure of the main SSD in Torvalds' workstation is preventing him from pushing anything to the mainline Git tree.
Torvalds is attempting to recover the dead hard disk but at the moment it doesn't appear easy and subsystem maintainers who have outstanding pull requests may need to re-submit their requests in the coming days. If the SSD disk isn't recoverable he will finish out the Linux 3.12 merge window from a laptop.
In his RIP dead harddisk message, Torvalds didn't comment on the circumstances surrounding the SSD's death or the drive's model. If it's the same configuration though as he's talked about in the past, it's an Intel SSD.
For those not yet familiar with the features that have already been merged for Linux 3.12, on Phoronix you can already read about some of the good features to this next major kernel update.