Any news on injury front for biggest game of season Friday night?

I don't think it's a mystery why the likes of Ablett and Delaney are getting injured. Some players have been playing 1st team since they were in their teens, you only get so many games before the body starts wearing out. Hall may only be what 26? but he's in his 8/9th season, probably same for Briscoe. Mags is just old, Moon has been around for a while and is due a few tweeks and pulls. Cuthbertson is 30 and plays prop.
We have a mature squad and it's showing it's age.
I believe that any big physical weaknesses get found out early in a career - Watkins, Sutty, Ward for example have all had knees blow early and will come back from that (Ward has had his shoulders, a little like JJB had early in his career), but eventually guys get to a certain number of games and injuries become more likely. Someone in the middle of that would be Singleton, he's been around a while but not racked up lots of games yet - he's in his prime and fit. Some guys just never get injured for whatever reason. Way they are built, the type of game they play - all factors. My guess would be that they are just in the sweet spot for weight and ligament/tendon/bone strength, and they have been lucky along with it.

There does appear to a rise in the number of cruciate knee injuries in recent years - could this be related to modern tackling techniques?

Yeah, they'll be certain factors along the way but at the end of the day can be simply down to luck/unlucky. Sinfield started early, would be right up as top tackler many years before even though he wasn't a big loose forward and took some big hits too but never really had a serious injury, just a couple of 3/4 weekers. Then you have someone like Gary Wheeler who seems to break down as soon as he steps onto a pitch.

I'm sure it's a factor, along with the size and power of modern players, but the current techniques of delaying getting the ball carrier to the floor for as long as possible will likely be a major factor too.

Which is why we need detailed info on injuries in the game, so that we can spot certain trends and deal with them with them where appropriate.

Definitely a factor. Three men in a wrestle is going to add to knee stress.
My own view as someone who has had 2-3 serious knee injuries (one about as bad as it gets), is that summer rugby and harder grounds are also responsible. If the ground is soft and has give then it's much less likely that you will trap or "catch" a foot in the ground which leads to less chance of twisting or rotating a knee. When we played in winter it always seemed like an Australian thing, I believe they did pioneer the reconstructive surgery down under.
I dislocated my right knee twice - both in pre-season training on hard ground and split a cartilidge in September on a hard pitch with long grass. Ironically my worst knee injury was playing in a bog, but the problem was the same, the ground was very wet clay and drying out, my foot got stuck and I couldn't move it - until my knee snapped.