On February 5, 2017, Saurik released an update to Cydia that re-enables the option to purchase tweaks. Usually, in the beta stages of an update to Cydia, purchases are disabled, in hopes of warding off users until a final version has been released. That being said, Cydia version 1.1.28 seems to be a release candidate for the gamma of Yalu/Yalu102, as it:
A. No longer includes the tag "beta" in the version number
B. Enables purchases again
This means that Cydia is now ready and raring to go for the general public, which means all we need now for a gamma release is Qwertyoruiop to fix a few bugs and include a "Mixtape Player" in Yalu. We are drawing ever near to the release, so, to everyone holding tight to vanilla iOS for the sake of a stable jailbreak, you won't have to wait much longer.
"Good things come to those who wait" - unknown.