Check out this webcast by Dave Field from MDPG in Redmond. It covers the Messaging & Security Feature Pack details coming soon for Windows Mobile 5 including remote device wipe capability from the Exchange admin console. SP2 will be required for this and per the previous entry, this will go in to tech preview very soon :)
We'll have our partner training for Exchange and mobility updated very soon and will let you know as soon as it appears - with subsidized places for certified and gold partners. I'm hoping that we can get this out within the next month to get you all ready to talk about and demo SP2/MSFP when they hit the streets later this year. Stay tuned