An update from late last week on the MechWarrior Online Website reveals that open beta testing of the upcoming mech combat game has suffered a setback (thanks GameSpot and apologies to Ant, who sent a note about this at the time that was overlooked). Testing was to commence today, and here's word on the delay:

We have decided to push Open Beta back. We agree that the game's current state of stability is not allowing us to get the latest experience across to new and veteran players alike. This is a short push back on the date and will depend on the stability and playability of the build.