Hi folks, I am using v5 Preview 1
I noticed that while browsing/editing table storage, Timestamp fields are shown as dates in results view as 3/20/2013 10:20:30 AM.
However if I double click on the record, Timestamp field is shown as type "string" and Value is truncated to 3/20/2013 (hour, minute and second is missing).
In fact, since Timestamp field is automatically updated (overwritten) by Azure Table Storage Service when the record is updated, then you might consider disabling editing for this Timestamp field (maybe make it shown as disabled). My 2¢. :)
Ahmet Alp Balkan