Clan,
All of the current fleet is being replaced with a single type.
The tendering process will begin shortly,but as the tender will be more or less general-stating the forecast roles for the heli and not helicopter size, the manufacturers will have a hard time coming up with the right cost/performance balance.
Without giving too much detail from the magazine away, going on the stated roles a larger heli is required.It is possible that more than on type will be put forward by each manufacturer,leaving it to the powers that be to decide which one is the most suitable.
It will be interesting to see how the evaluation process is worked on this one.