As you can see from the roadmap below, before the end of 2009 we will have Forefront Threat  Management Gateway (TMG) and Forefront Unified Access Gateway (UAG).

Forefront Threat Management Gateway
TMG is a secure web gateway that enables safe employee web use through comprehensive protection against malware, malicious web sites and vulnerabilities. Building on its predecessor, ISA Server 2006, TMG provides new URL filtering, anti-malware, and intrusion-prevention technologies to protect businesses against the latest web-based threats. These technologies are integrated with core network protection features such as firewall and VPN to create a unified, easy-to-manage gateway.

Forefront Unified Access Gateway 2010
Building on its predecessor, Intelligent Application Gateway, UAG enables remote access via managed and unmanaged PCs and mobile devices. Integrating a deep understanding of applications, the health state of end user devices, and the user’s identity – UAG enforces granular access controls, ensures security, and reduces management costs and complexity

thx to Forefront Team Blog and Mary-Jo Foley’s Blog