Intel showed a slide that said Haswell will have uncompromised performance, all day use and greater than 10 days of connected standby. This all adds up to a mainstream notebook that has a connected standby power that is 20x better than we what we had in 2011 with the Sandy Bridge architecture. The slide also said that Intel is targeting 2013 to launch Haswell, which supports the rumored Q2 2013 launch time frame..."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips