Any news of another registry is always interesting.
It doesn't say the minimum requirements for aircraft weight etc but I gather (from a well connected resident) that it will be like the Cayman Islands etc, in other words of no use to sub-turboprop GA should the DfT kick out N-reg planes from the UK.
The larger planes are well catered for by all the well known registries. Aruba in particular is a nice one, but again > 5700kg, IIRC (I wrote to them).