Include the link to release note/package overview in the update prompt, and update gopls default version (#3041)

diff --git a/src/goInstallTools.ts b/src/goInstallTools.ts
index bbe06d3..9c90714 100644
--- a/src/goInstallTools.ts
+++ b/src/goInstallTools.ts
@@ -361,11 +361,18 @@
 	}
 	const goVersion = await getGoVersion();
 	const updateMsg = `Your version of ${tool.name} appears to be out of date. Please update for an improved experience.`;
-	vscode.window.showInformationMessage(updateMsg, 'Update').then((selected) => {
+	const choices: string[] = ['Update'];
+	if (toolName === `gopls`) {
+		choices.push('Release Notes');  // TODO(hyangah): pass more info such as version, release note location.
+	}
+	vscode.window.showInformationMessage(updateMsg, ...choices).then((selected) => {
 		switch (selected) {
 			case 'Update':
 				installTools([tool], goVersion);
 				break;
+			case 'Release Notes':
+				vscode.commands.executeCommand('vscode.open', vscode.Uri.parse('https://github.com/golang/go/issues/33030#issuecomment-510151934'));
+				break;
 			default:
 				declinedUpdates.push(tool);
 				break;