GTA 5 source code hints at the addition of a jet pack

Come fly with me
You might remember the two-part GTA 5 secrets round-up I did many moons ago when the game first released. Perhaps you remember one secret in particular - the mystery surrounding the Mount Chiliad mural, where players could spy seemingly innocuous etchings depicting eggs and jetpacks and UFOs in the cable car station. Turns out they may not be so innocuous after all.

According to Chr0m3 x MoDz, a member of the Se7enSins community, several strings of code in GTA 5 seem to allude to the existence of a jetpack.
Attachment 14735The user has posted screen grabs of what they claim to be the source code for Grand Theft Auto 5 1.12, and apparently the same parts of the code in previous versions did not include jetpack references. Incoming DLC unlock, perhaps?

I won't pretend I understand even the faintest bit about coding, but you can see the strings of text below for yourself.

p_SPA_Jetpack
CTaskJetpack
TASK_JETPACK
DRIVEBY_JETPACK // Setting it so you can shoot from the JETPACK just like parachute
.?AUTunables@CTaskJetpack@@
?AVCTaskMotionJetpack@@
.?AVCJetpack@@
.?AVCTaskJetpack@@
.?AVCGadgetJetpack@@ // the actual jetpack just like parachute.

TASK_JETPACK(int unk);
XBL Toothpik found possible skis .data:838E1118 00000012 C .?AVCGadgetSkis@@
.rdata:820571DC 0000000D C START_SKIING
.rdata:820571D4 00000007 C SKIING
.rdata:820571C4 0000000E C FINISH_SKIING

I have only one further question, your honour - if we're getting a jetpack now, when do we find out what the egg part of the mural means?

GTA 5 source code hints at the addition of a jet pack - rumour