The Palm Treo Pro appeared on the Sprint site back in January, but it was then pulled down and never was released. Sprint and Palm now posted an official announcement that the Palm Treo Pro will be released on Sprint on 15 March. The Sprint Palm Treo Pro will be available for US$199.99 after US$100 instant rebate and US$100 mail-in rebate with an Everything or $30/month or higher data plan and a 2-year contract. The unlocked Treo Pro is still priced at US$549.The BIG news though is that this Treo Pro will have Internet Explorer Mobile 6 loaded as well. Will existing Treo Pro owners get this updated browser?