Here is a brief list of what he's been doing, first off the massive news of his invention, take notice of that his invention. Third Man Records had this to say,

The Dead Weather will be releasing three versions of their single “Blue Blood Blues” this week including, most excitingly, on a brand new format entitled the Triple Decker Record™. The Triple Decker Record ™ designed by Jack White and assembled by United Record Pressing Nashville, TN is a unique 7” version of the single embedded inside a 12” version. Triple Decker Record ™ will be available in a limited edition of 300 copies, 100 of which will be on-sale at the Third Man Records store in Nashville, and the remainder available randomly through mail order and at select brick and mortar vinyl dealers worldwide.

If that's not impressive I don't know what is. Jack has also been touring with various acts, working with Conan O'Brien, Wanda Jackson and other members of his label, 'Third Man Records'. Speaking of Third Man Records, the companies website has just launched an incentive called 'The Vault', to see what it is click here. From the latest Vault release, The Raconteurs (currently working on new material) gave fans a rare rehearsal track off of their album 'Consolers of The Lonely'.....and here it is. Enjoy.