The mobile browser arena just got a little more competitive on Tuesday when the much-talked-about mobile browser Skyfire launched its public beta. Previously in private beta, the now public version opens up Skyfire to anyone in the US with a Windows mobile or a Nokia Nseries / Eseries S60 (3rd Edition) phone. Skyfire also received a version upgrade from 0.6 to 0.8 that features improved video streaming, faster page loading, the ability to download images and PDF files, and a redesign of the interface to incorporate more icons and less text. Best of all, Skyfire, unlike its competitors (cough, Opera Mobile) comes in at a nice price. It’s free!