Is there any chance you guys would include this in the near future? I am on CentOS using 1.4.2 and would really like 1.5.*
I'm not sure whether Joe would put that in there or not, but you're certainly welcome to ask! I'd recommend filing a support request, using the Support link above.
I was about to suggest that you could use the DAG repository to get a newer subversion version, but they only have 1.4.6 in there.
So, see what Joe says :-)