Apple refreshes their Mac Mini during summer Mac product press conference, introduces new iMac (now with only 20″ and 24″ and slimmer design) and a redesigned slimmer keyboard.

Mac Mini Specifications:

1.83GHz Combo Drive

• 1.83GHz Intel Core 2 Duo
• 1GB memory
• 80GB hard drive
• SGD$1,048.00

2.0GHz SuperDrive

• 2.0GHz Intel Core 2 Duo
• 1GB memory
• 120GB hard drive
• SGD$1,348.00

iMac Specifications:

20-inch: 2.0Ghz

• 2.0GHz Intel Core 2 Duo
• 1GB memory
• 250GB hard drive
• 8x double-layer SuperDrive
• ATI Radeon HD 2400 XT with 128MB memory
• SGD$2,048.00

20-inch: 2.4Ghz

• 2.4GHz Intel Core 2 Duo
• 1GB memory
• 320GB hard drive
• 8x double-layer SuperDrive
• ATI Radeon HD 2600 PRO with 256MB memory
• SGD$2,488.00

24-inch: 2.4Ghz

• 2.4GHz Intel Core 2 Duo
• 1GB memory
• 320GB hard drive
• 8x double-layer SuperDrive
• ATI Radeon HD 2600 PRO with 256MB memory
• SGD$2,988.00

24-inch: 2.8Ghz

• 2.8GHz Intel Core 2 Extreme
• 2GB memory
• 500GB hard drive
• 8x double-layer SuperDrive
• ATI Radeon HD 2600 PRO with 256MB memory
• SGD$3,898.00

- Screenshots @ Engadget

If only they provide free upgrade to Leopard, if not I would suggest you to wait.