This seems to work. The list is getting longer of bugs or annoying little issues with this product but I'm not complaining we have workarounds :)
https://www.reddit.com/r/SCCM/comments/39yed9/sccm_2012_r2_sp1_slow_to_list_osd_task_sequences/ >From this article above: Just had this same problem after upgrading SCCM 2012 R2 to SP1. Saw this article and did some testing. What worked for me was to set the deployment availability time to c.a. 12 hours earlier (within the same day) then it pop up right away in the deployment list. Hope this helps.
