Add release notes for v1.7 (#3456)

* Add release notes for v1.7

* Apply suggestions from code review

Co-authored-by: Kim Nylander <104772500+knylander-grafana@users.noreply.github.com>

---------

Co-authored-by: Kim Nylander <104772500+knylander-grafana@users.noreply.github.com>

docs/sources/release-notes/v1-7.md

@@ -0,0 +1,61 @@
+---
+title: Version 1.7 release notes
+menuTitle: V1.7
+description: Release notes for Grafana Pyroscope 1.7
+weight: 550
+---
+
+# Version 1.7 release notes
+
+We are excited to present Grafana Pyroscope 1.7.
+
+This release includes several new features:
+
+* The ability to relabel profiles at ingest time
+* Per-app (service) usage metrics
+* Stacktrace selectors for merge profile queries
+* Profile `pprof` export tailored to Go PGO
+
+Additionally, we've improved stability, performance, and documentation.
+
+Notable changes are listed below. For more details, check out the full 1.7.0 changelog: https://github.com/grafana/pyroscope/compare/v1.6.0...v1.7.0.
+
+## Improvements and updates
+
+Version 1.7 includes the following improvements and updates:
+
+* Ability to relabel profiles at ingest ([#3369](https://github.com/grafana/pyroscope/pull/3369))
+* Use Grafana Alloy (instead of Grafana Agent) in the Helm chart ([#3381](https://github.com/grafana/pyroscope/pull/3381))
+* Per-app usage metrics ([#3429](https://github.com/grafana/pyroscope/pull/3429))
+* Add stacktrace selectors to query merge ([#3412](https://github.com/grafana/pyroscope/pull/3412))
+* `pprof` export for Go PGO ([#3360](https://github.com/grafana/pyroscope/pull/3360))
+* Custom binary format for symdb ([#3138](https://github.com/grafana/pyroscope/pull/3138))
+* Repair truncated Go CPU profiles ([#3344](https://github.com/grafana/pyroscope/pull/3344))
+* Add initial load tests ([#3331](https://github.com/grafana/pyroscope/pull/3331))
+* Align default step for `/render` with Grafana ([#3326](https://github.com/grafana/pyroscope/pull/3326))
+* Allow use of different protocols in `profilecli` ([#3368](https://github.com/grafana/pyroscope/pull/3368))
+* Various performance improvements (#3395, #3345, #3349, #3351, #3386, #3348, #3358)
+* Improve readiness check for ingesters and frontend ([#3435](https://github.com/grafana/pyroscope/pull/3435))
+
+## Fixes
+
+Version 1.7 includes the following fixes:
+
+* Fix error handling in filterProfiles ([#3338](https://github.com/grafana/pyroscope/pull/3338))
+* Fix frontend header handling ([#3363](https://github.com/grafana/pyroscope/pull/3363))
+* Fix line numbers for pyspy ([#3337](https://github.com/grafana/pyroscope/pull/3337))
+* Don't compute delta on relabeled `godeltaprof` memory profiles ([#3398](https://github.com/grafana/pyroscope/pull/3398))
+* Honor stacktrace partitions at downsampling ([#3408](https://github.com/grafana/pyroscope/pull/3408))
+* Fix infinite loop in index writer ([#3356](https://github.com/grafana/pyroscope/pull/3356))
+
+## Documentation improvements
+
+Version 1.7 includes the following documentation updates:
+
+* Add a Grafana installation to all examples ([#3431](https://github.com/grafana/pyroscope/pull/3431))
+* Fix broken links ([#3440](https://github.com/grafana/pyroscope/pull/3440))
+* Remove `--stability-level` for Alloy v1.2 ([#3382](https://github.com/grafana/pyroscope/pull/3382))
+* Add parameters from otel-profiling-java ([#3444](https://github.com/grafana/pyroscope/pull/3444))
+* Add supported languages for eBPF ([#3434](https://github.com/grafana/pyroscope/pull/3434))
+* Link to supported languages ([#3432](https://github.com/grafana/pyroscope/pull/3432))
+* Update link to play.grafana.org ([#3433](https://github.com/grafana/pyroscope/pull/3433))