Possible future releases are:

AMP (Mikro-Mir): 1/72 & 1/48 Macchi MC.72, 1/72 Piaggio Pegna P.7

FLY Models: 1/72 Caproni Ca.100, Caproni Ca.164

ICM: 1/32 Fiat Cr.42

Italiankits.it Visit their website to see quite a number of possible future releases

Sword: 1/48 Reggaine RE.2001 Falco II.

Recent releases worth checking out are:

AMP 1/48 Piaggio Pegna P.7. Please note that it actually scales out at 1/50.

Dora Wings 1/72 Savoia S.55. Highly detailed, but rather complex kits of this iconic twin-hulled seaplane.

SBS Model 1/72 FIAT G.50, Macchi MC.72 and Piaggio Pegna P.7. Beautifully cast highly detailed resin kits.

Sword  1/72 FIAT G.55 , Reggiane RE.2000, RE.2001, RE.2002, RE.2005.  1/48 RE.2005

HITS

Regia Aeronautica kits from the following are a pretty safe bet when comes to overall accuracy and/or subject matter.

Broplan

Chroroszy Modelbud

Marsh Models 'Aerotech' (Schneider series)

Planet Models

SBS Models

Special Hobby

Sword

These companies have long since ceased trading. Their products are very much missed!

Alphaflight

NOIX Models

Italian Classic

MISSES

I found these kits had too many issues to make it a worthwhile experience.

Airfix Savoia S.79 Sparviero (a few shape errors)

Aviation USK FIAT RS-14 (major shape errors)

Delta2 Savoia S55X (very crude moulding)

Delta2 Campini-Caproni  (major shape errors)

Dujin Stipa-Caproni (shape errors)

Fly Models Caproni Ca.101 (crude moulding)

Hasegawa FIAT G.50 (poor details)

Italian Wings Piaggio P.119 (shape errors)

Italeri Reggiane RE.2002 (shape errors)

LF Models IMAM Ro.1 (crude moulding)

LF Models Caproni Ca.101 (crude moulding)

LF Models Caproni Ca.331 (shape errors)

Supermodels CANT Z.1007bis (major shape errors)

future