A Malaysian Web site that goes by the name, Tech ARP, has reportedly said that Microsoft Corp will be today releasing its Windows Vista Service Pack 1 (SP1).

Windows Vista SP1 will be released to manufacturing (RTM) today, while computer makers will get to install the updated operating system on new desktops and laptops only later this week.

And Vista SP1 will be released in two phases. The first phase is today with SP1 being released in five out of the 36 available language packs, which includes English, French, German, Japanese, and Spanish.

The second phase is scheduled for nearly one to two weeks later when Vista SP1 will be released in all 36 language packs.

Microsoft will also offer Windows Vista SP1 through Windows Update, Microsoft Update, and possibly Windows Server Update Services (WSUS).

Meanwhile, the last Windows Vista SP1 build was released on Jan 24, 2008 to a select group of around 15,000 testers.

If Microsoft indeed releases Windows Vista SP1 today, that's what the company has been promising all along, saying that Windows Vista SP1 will go final sometime in the first quarter of this year which ends on March 31, 2008.

Apart from the Malaysian Web site, some other sources have said that Microsoft Windows Server 2008 will also release to manufacturing in the coming week.