The prospect of Ruby-centric PaaS provider expanding its platform’s capabilities to cover additional application types should worry some in the cloud-provider market. Heroku’s popularity (it presently hosts 60,000-plus apps) is no mirage, and one has to assume it only will skyrocket if Heroku opens development to popular languages like Java, .NET or PHP. Aside from reportedly being quite easy to use, Heroku’s PaaS utilizes a SQL database, while also letting users connect to Amazon’s Relational Database Service. This is in contrast to other PaaS offerings that can require code changes or learning to write to new database types. It’s all just talk right now, but $10 million more and a market that’s still basking in VMforce’s light seem like the right combination to get started down this multi-language-support road.