If the OP means, is OG on the verge of a breakthrough, then IMO the answer is no. I can see no sign of OG closing in.
Sticking to how the topic is headed, although I am not a fan of OG, I believe it has achieved a lot.
According to the Met, cold cases are reviewed once every two years, so I am tending to think what will be in the pot if OG is archived.
The first thing is that HOLMES 2 should be (nearly) fully loaded, to a high degree of quality. It would not contain the work of a future McCann PI team, or anything else floating around in the shut down period.
But it would already contain the full PJ Files, presumably professionally translated to debug any translation issues. It would contain the previous McCann PI team work. It would contain the Crimewatch responses.
It should contain the rather simplistic but rather important idea that hand digging a Madeleine-sized grave in/around Luz is highly unlikely, so they should be looking at alternatives.
It would appear that a number of characters have essentially been ruled out. Some of these are peripheral. But if Sergey Malinka really has become a person of no interest, that would be quite a step forward.
If Tony Bennett is correct, DCI Andy Redwood has met with Martin Smith twice. I will not speculate on the content of such meetings, other than to hope it produced some progress.
The forensics trip to Coimbra should have produced a better evaluation of what opportunities lie in that respect. Even should that turn out to be no opportunity at all, OG would be better informed than we are.
Again, I can only speculate about the interview with Mr John Hill, but if they don't have better information on the workings of the OC, I would be surprised and disappointed.
HOLMES 2 should have flagged up a lot of dross that puzzles us. Both Neil Berry and Raj Balu talk about previous statements that don't appear to be in the files, just as one minor example.
OG should have had access to the bits of the PJ files that were not made public, and this may be supported by one particular person interviewed.
In information made public about OG, they have investigated a large number of paedophiles/sex offenders and not found a link to the case.
I could go on, but the bottom line is OG appears more likely to be archived than to produce a solution. However, wouldn't you like to get access to the current OG case file for a week or so?