What's the future of RDLC ("client-side SSRS", aka "ReportViewer")?

Thanks for kicking off this discussion on the future of RDLC. You've raised some critical points, and I'll address them based on the current state of RDLC and available solutions.

1. Microsoft’s stance on RDLC: Microsoft appears to be deprioritizing RDLC in favor of RDL-based reporting and Power BI. The lack of official RDLC support for .NET 5+ and the absence of a ReportViewer designer for Visual Studio 2022 suggest they’re steering developers toward cloud-based solutions. Still, RDLC remains popular where client-side reporting is preferred.
2. Migration options: For teams with a large repository of RDLC reports, some third-party solutions continue to support them on modern .NET versions. (Disclosure: I work at Syncfusion, where our Bold Reports platform supports SSRS RDLC files and provides an RDLC designer/viewer.) Other vendors may also offer viable paths, but it’s important to check long-term support for .NET 8+ and cross-platform deployment.
3. Open-source possibilities: Open-sourcing the RDLC engine would be one way to sustain it for legacy use, though given Microsoft’s focus on Power BI, this seems unlikely. Community-led efforts exist but usually lack the polish of official support.

Curious to hear what others are doing: Are you sticking with RDLC, migrating to RDL, or moving to other reporting tools?