All it means is that there will be an "upgrade" program for the existing Lynx/Gaz fleet and they will soldier on.
Helicopters do not have a finite life. Hence we still see Alouette 2 and 3 in military service around the world. The German army recently retired an Alouette with around 50 years service under it's belt. The Gaz are around 35 the Lynx less. Spares are an issue, small runs cost more, but this is a year on year maintenance budget, not an aircraft replacement program.
It would actually make more sence to combine the whole army support helicopter force into one unit under the control of the user. Hello army air corps, goodbye RAF SH fleet.