As most of your already know - Google has updated its algorithm and according to this post on Official Google Blog - optimized anchor text inside a press release is now qualified as "unnatural links". They also advice marketers to make press release links nofollow.
On the other hand, many SEO's and marketers have proven this statement is not 100% true.
See the test made by one webmster: More Proof Google Counts Press Release Links, Using Matt Cutts's Own Blog
So my questions are:
1. Are you using dofollow or nofolllow links when doing press release distribution?
2. Are you using anchor text, brand name or naked URL's for thoose links?
3. Does anyone who use dofollow or/and anchor text rich links inside press releases has faced Google penalty or significant drop in rankings?
Thanks in advance