In reply to AndyG71:
Just got back a week ago. The weather was and has been mixed all summer. But the routes were do-able. You need a bit of luck with the weather.
The Finsteraarhorn should be relatively safe, although the summit ridge is perhaps undergraded at PD. There was fresh snow when we did it and I used slings and a few nuts.
The Gross Grunhorn likewise felt safe. It's a bit steep just as you gain the ridge(from the Gruneggfirn), but the ridge itself felt easier than the Finsteraarhorn.
The long glacier approaches to the Fiescherhorn might be a problem. From the Finsteraarhorn Hut there are seracs to pass, so might be a bit dangerous. We tried from the Monchjoch Hut but there was too much fresh snow, so nipped up the Monch instead. We were aiming for the NW Ridge, which should be easier with all the snow. We were a bit worried by the descent from the col with all the snow, but didn't get a look at it.
We also did the Aletschhorn from the Mittelaletsch Bivi, in case you're interested. The snow was perhaps marginal up to the ridge (between the Aletschhorn and Dreieckhorn) and very hard work. Otherwise, it was not too bad, although the rocks below the summit were awkward with all the fresh snow.