Microsoft has confirmed in their blog that they will not release a 32bit version of Exchange 2010 like the previous editions. This means that we need to move to a 64bit compatible desktop or laptop for testing & training purposes.
More info here
No 32bit Exchange 2010?
Rajith Enchiparambil
Cloud Architect & Blogger with interests in Microsoft 365, AWS & Azure. I am active on Experts Exchange & TechNet forums and I am a technical author for SearchExchange. Follow me on Twitter, LinkedIn or Facebook for the latest updates. For consultancy opportunities, drop me a line.