Postgres adoption news always generates energetic community discussion. When Salesforce announced last year that they wanted to hire 40-50 people for a huge Postgres project, the community and the press took notice. Last month's announcement of Salesforce hiring Postgres core team member Tom Lane was big news, and Salesforce's sponsorship of a Postgres unconference weeks later helped cement their Postgres community involvement.
The press release is certainly good news for Oracle, and they needed some good news — Oracle have been having serious financial problems for the past nine quarters. Having Salesforce, one of Oracle's largest customers, exploring a Postgres migration also wasn't helpful, and this partnership might kill that.