Apple Announcement LIVE: iPhone OS 4.0 News, Updates

Jun 07, 2010 | Updated May 25, 2011

Apple will be unveiling iPhone OS 4.0 on April 8, 2010, and you can follow that Apple announcement LIVE on this page.

Get all the latest iPhone OS 4.0 news and updates right here from our curated Twitter lists of Apple news sources, tech news sites and tech journalists.

Know of a great Twitter user to add to one of these lists? Let us know at!