Turkey in April, not February? This really confuses me. If that was ture, what about earlier reports and where would they go until then?
If they have the Scotland scenes scheduled for Mid-March - about 4 weeks from now - it seems more likely (but not certain) that the main unit will stay in the UK for any remaining exterior London scenes and studio work, then move up to Scotland, before moving the entire main unit to Turkey. So the 2nd Unit could be doing exterior shots in Turkey during this period until the main unit arrives.
Once the main unit have shot in Turkey - for a month or so - they would return to Pinewood in mid-May to wrap up the remaining studio scenes. But this is just an informed guess and what would seem to be a logical way to schedule the filming.
Turkey in April, not February? This really confuses me. If that was ture, what about earlier reports and where would they go until then?
I'm guessing, like others have suggested, that the second unit will go to Turkey late February/early March, and the main unit will join in April. Perhaps they've decided to try and complete all the Pinewood scenes first, and the shoot will wrap in Turkey.
They will most likely ultimately wrap up back at Pinewood for any remaining studio work - green screen driving scenes, Int. train (to match in with the exterior Turkey action), possibly the Int. Manor House action - because it (nearly) always makes more sense to shoot the exterior location action first, then match the action (explosions, impacts on house etc.) of that exterior action with the Interior scenes back on a Pinewood stage.