Dave has unveiled the as yet unannounced plans of A N Other manufacturer, their hand is somewhat forced, but they've stood by their commitment not to announce until they've delivered a tangible product. We accuse companies of 'land grabbing', so I think it's an admirable stance.
We don't know the details of the other product yet, so speculation about details such as liveries is a little pointless at the moment. To me it would at least seem to make sense to wait until the other manufacturer fully reveals their plans, in their own time, rather than someone else rather stealing their thunder.
If people feel Dave's is the best model and/or want to support him then carry on, pay deposits, nothing need change (until Dave instigates a change). Others may wish to hold fire and see what the options truly are before committing.