Konrad,
I did a little research at IBM to find out what assistance can be gotten 
to help encourage your vendor to move to V6R1.  Here's the response I 
received:
<snip>
Hi! 
We do a lot to make the ISVs aware of a new release and the value of the 
new functions in the release (announce webcasts, websites, email and 
telemarketing campaigns, WW education events, ...).  We also work to make 
sure the ISVs know there are IBM resources to help them (PartnerWorld, 
roadmaps, IBM Innovation Centers, Virtual Loaner Program, ...). However, 
the strongest motivation for the ISVs to move to a new release is the 
demand from their own customer base.   We've found that a customer 
contacting their ISV directly is usually the most effective way to channel 
the request.     If they have a Sales rep to work with, they can also 
help. 
Here's a public website that they can use to check to see which ISV apps 
have been registered as supporting V6R1 already.   (Note that it is up to 
the ISV to supply this information, so this is not a complete list.)  --> 
http://www-304.ibm.com/jct09002c/gsdod/homepage.do 
</snip>
Rob Berendt
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