My letter doesnt have also a mention that they are processing an OWP for me. But I think they are for 2 reasons:
1) usually the standard letter says "... now you apply for a work permit or study permit" ... if ours dont have this info, I think it is because they are already processing them ...
2) i paid 1040 in total and i didnt include the OWP fee. However, they alocated 150 from the RPRF and I had to pay again 490 (they will give a refund of 340) ... in other words, they used part of my money already paid to process the OWP (i sent all owp application, I just didnt pay the fee because i thought it wasnt necessary).
SO I think they are processing them. I they didnt, there would be a mention in our letters like the one previously mentioned.