To me there is a difference between miniatures you can play old school games with (read any you jolly well like) and minis that have the old school look.
I'm very interested to see any miniatures being used for old school gaming but I must admit am particularly interested in miniatures that fit in with my existing old 80's citadel collections.
Most modern sculpts either seam to be very realistic or somewhat manga in their proportions. Often because they are multi-part plastic have the multi-part plastic range of poses. as well. These styles don't to my eye sit well within my collection. This usually means that I like old lead but there is a growing range of new sculpt or reissues that fit the bill nicely.
On the reissue front it is exciting to see that Foundry is casting up lost treasures once more so old citadel feudals, Vickings and hopefully even tribesmen may be available again.
You can get the Foli Works figures for fantasy warlord form Alternative armies if you email them. These are from about 1990 onwards but are nicely old school.
Mirliton has been mentioned but I should point out that many of the grenadier sculpts are available from Terrain warehouse based in my current home town of Royston
http://www.battlezone-miniatures.co.uk/shop/category/2. There were always grenadier sculpts in my early armies so these are very welcome some day I'll collect the wood elf range.
Speaking of Royston there is also Otherworld miniatures, Richard is base just a couple of miles from my house and his miniatures certainly fall into the category of new miniatures that fit in nicely with my current collections. The Orcs are clearly different, the hob-goblins large (I still got them though, in fact a separate otherworld goblinoid army looms in my future) but the vermin and kobolds and monsters are just the ticket.
White knights and Clams are clear attempts to do homage to earlier sculpts and I can only hope to see more of them.
The Goblins on offer from Bruno, 4A, Crooked Claw and Black Hat fall into the old school but 4th ed bracket for me. No problem I collect 4th ed but they are just the other side of cartoony and a little big, though thats just going on the pictures and ironically many of the 4th ed gobbos were tiny. I'll be getting them all in due course no doubt. Funny that so many indy producers are looking at goblins.
The Black Hat ones would work well with the Harlequin nightlings which are a fair bit bigger than 4th ed night goblins which I collect and love. Now Harlequin are technically 90's reissues but have been reissued long enough perhaps to fall into the current batch. Great stuff here and it sort of bridges the 3rd 4th divide along with Heartbreaker if you can find them.
I'm trying to keep a set of links on the