I went for the last three Saturdays, and a lot of the tracks that used to be medium/hard for me are now hard+ and on the way to extreme - meaning min 35" tyres and a vehicle that you're not afraid to bounce off walls.
As an example, the Powerline Gully (where you drop in down a deep chute, then go through an s-shaped squeeze with water in it, before climbing out again) was always a bit challenging, but is now quite difficult.
On the flipside, there's now a rock bridge across the Mt Beerwah Mudholes (Forestry have done a lot of earthworks). You can still take the plunge either side of the rock bridge if you want a swim.
The track that goes south from near Tibrogargan carpark through to the back of Beerburrum is also harder than in the past - used to be a good 'fun' challenge for people new to GH, now it's a fair bit harder especially when a bit damp.
I'd suggest you head for the Glasshouse Mts Lookout (not Mt Beerwah Lookout), easiest way is to take the Mt Tibrogargan turn-off from Steve Irwin Way, follow to end, turn left then turn right. Take in the view there for a bit, then air down (22-24psi is good) and continue along that road (goes to Woodford) on the dirt. You'll go under the first set of the two north-south powerline tracts, then come to an intersection, turn right there (towards Woodford). When you get to the second powerline tract, pull into a 'carpark' on the left - this is the top of Big Red. You can walk around a fallen tree down a short track to see if anyone is coming up, and in the distance you may see vehicles driving towards you along 'Powerline'.
Go back across the road and head north under the powerlines, go through the macadamia farm (with two small rock-surfaced water crossings), the track then goes north-north-east for a bit before you make a left to head north-west and eventually come to the Telstra tower where Widowmaker is. Note, you won't be driving Widowmaker! but there are other tracks there to try. From here you can head back south and where the track veers left, instead of working back to the right, keep going left, you'll head towards other areas with lots of tracks.
Suggest you take a compass so you can find your way back out. Note where you are in relation to the mountain peaks (especially Mt Beerwah, the biggest). And check out Google Earth before you go, the powerline tracts are clearly visible, as is the macadamia nut farm on the western powerline tract just to the north of the Beerburrum-Woodford Rd.