Research in Motion has the new BlackBerry OS 4.5 ready for launch. All BlackBerries coming out this summer will have this system already installed while the rest of us, stuck with an older Berry will have to wait until September to go upgrading.

In the mean time the BIS 2.5 upgrade is on. Today, June 29th, the BlackBerry Internet Services 2.5 should have gone live and by this time you might already have downloaded it. Some of the cool stuff this upgrade brings is the ability to add and save attachments while working from your BlackBerry smartphone. As long as they are under 3MB you will be able to attach all sorts of Microsoft Office files and more. You will be able to attach video and audio too.

Wait there’s more! Push email is available. All you need is the BIS 2.5 and an AOL or Hotmail/MSN mail account and you can go pushing mail in no time.

Wait there’s more… bad news! Not all of these upgrades will work. You will need the OS 4.5 to have the BIS 2.5 working properly. Better wait to September or get a brand new RIM smartphone this summer.

via Gizmodo