There are not many 'parked' 300s with first class now -
1 at XMN being undergoing a major
6 parked in AS - one of these coming back to HKG next week The oldest 3 aircraft (15 years +) B-KPD _E _F also parked in AS - may not re- join the fleet until 2024
The other parked 777s are 3 class - no 1st class

No aircraft are leased to other airlines and defiantly no 777s are leased to another airline as has been suggested above

The only firm outstanding orders for aircraft are -
The the remaining 2 X A350-900 . The first B-LQG is due for delivery now -no firm date for the second
The 21 (ordered 2013) 777X due 2021 should new start to arrive in 2025.

Also it seems almost certain that an order for 6 X 777-8 freighters will be shortly placed as will orders to replace the Air Hong Kong A300 freighter fleet with a 330s (as announced in the last board report).

Anything else re new orders being placed is purely speculative