A lot of people are interested in the 1.4 release (including me). The two things that were identified in the last discussion were trie range support and FieldCacheRangeFilter (which is better done with ValueSourceRangeFilter). VSRF is pending which I can take up, however I don't think it needs to hold up the release.
It's been a few months since that discussion. I suggest that we draw the line here. Let us mark all new features from now on for 1.5 and resolve the issues already marked for 1.4. I'd love to see a release in early April. Grant, I know there's a lot going on with the Mahout release. I'm happy to help with the Solr release in any way I can. -- Regards, Shalin Shekhar Mangar.